Common Wrong Answer Types: Opposite Answers

Salesman: The revolutionary new Shepherd's Gate Protection System represents the latest in sheep-tending technology. The built-in sensors recognize the scent of predators from miles around. When your flock is in danger of attack, the electronic gates surrounding the flock will quickly slam shut, keeping any unwanted animals away and your flock will be safer than ever. Sure, the system is prone to false alarms, but you know what they say: "Better safe than sorry."

Which one of the following, if true, most strengthens the salesman's argument?